Al Franken is particularly concerned about whether Apple has stymied competition in the music-streaming business by controlling its own application marketplace.
The investigations will determine whether Qualcomm was in violation of antitrust regulations in the European Union, and could mean significant fines for the company, if it's found guilty.
Lengthy download times have been reported by European users.
Europe's regulators want to know whether Amazon's deals with book publishers require them to inform the e-retail giant of more favorable terms from rivals.
In a letter to the attorneys general of New York and Connecticut, lawyers for the Universal Music Group say the label hasn't engaged in anticompetitive practices with Apple over free streams from Apple rivals like Spotify.
The social network's head of public policy in Europe says changes to how regulations are handled there could prompt Facebook to stop bringing new features to its service.
A ruling by Europe's highest court puts the social network and thousands of other companies in a tough spot over how they handle user data.
Technically Incorrect: An Uber driver is subjected to racially tinged, angry invective from an NYPD officer, while a passenger films the whole thing.
Russian competition authorities give Google until November 18 to reverse contracts requiring phone makers install its apps.
The hackers targeted JPMorgan Chase last summer and gained access to information on 76 million individuals and 7 million small businesses.